The monsoon storms are almost over...

the skies are clearing again...

it's getting cooler...

It must be time for a big star party!

East Valley Astronomy Club invites you to attend the

2020 All-Arizona Star Party

Friday October 16 and Saturday October 17

Hovatter Airstrip Site   (South of I-10 and Hovatter Rd [Exit 53])
N 33° 34' 50" W 113° 35' 53"
Elevation: 1,378 ft. or about 420 m


East Valley Astronomy Club, Inc. - Star Party Etiquette

Antennae Site CSC

General Location

Detailed Map + Directions

Hovatter Road Airstrip

The All-Arizona Star Party is at the Hovatter Airstrip: Travel time about 2 hours.

From Phoenix:

  • Go west on I-10 to Hovatter Rd at exit 53 or about 40 miles west of Palo Verde Nuclear Power Generating Station.

  • Turn left over the freeway, drive over the canal.

  • When you cross the canal, turn hard left.

  • Go 1.1 miles to a bend in the road.

  • As the road veers to the SE, look for a road running due south at the same point--- VINEGAROON ROAD. Take it for 1.8 miles.

  • You will come to a small left-right zig-zag, then see a chain link fence enclosing an area about 20 ft by 20 ft. That’s the airfield entrance.

Hovatter Road Airstrip Site is the location of the this year's All-Arizona Star Party. The observing field is located about 90 miles west of Phoenix, along Interstate 10, just south of the Hovatter Rd exit (Exit 53). The sky conditions are very good, similar to  those of the old Vekol Road site and the former AASP site, Farnsworth Ranch.

This new site is classified as '2' on the Bortle scale, defined as having faint shadows cast by the Milky Way visible on white objects. Clouds are black holes in the sky. No light domes. The Milky Way has faint extensions making it 50 degrees thick. Limiting magnitude 7.1 to 7.5.  Sky brightness is 21.99 to 21.89 mags per square arc second.

The site offers the right combination of dark skies, good visibility and temperate nights that will encourage you to stay up well past your bedtime! It is important to note that this site is on US BLM land, and the hosts of the AASP have a permit from the US BLM for its usage. This is a primitive site - so if you need something you'll have to bring it with you! Porta-Potties will be available on site. Attendees are welcome to camp overnight at AASP.

Friday 16 October

Begin civil twilight  06:09

Sunrise  06:34

Moon Rise  06:17

Sun transit  12:13

Moon transit  12:19

Moonset  18:13

Potluck Dinner  17:00

Sunset  17:52

End civil twilight  18:17

Coffee at Hospitality Tent  22:00

Phase of the Moon on 16 October: 0 days before New Moon with 0.1% disk illuminated



Saturday 17 October

Begin civil twilight  06:09

Sunrise  06:34

Moon Rise  07:29

Sun transit  12:13

Moon transit  13:14

Temperance Union Happy Hour  16:00

Raffle ($1 per ticket or 6 for $5)  16:45

Chile Dinner $5  17:00

Sunset  17:51

Moonset  18:51

End civil twilight  18:16

Coffee at Hospitality Tent  22:00

Phase of the Moon on 17 October : 1 day after New Moon with 1.7% disk illumination

This map is a small excerpt (192mi east to west, by 230mi north-to-south) from the image of North America from the The World Atlas of the Artificial Night Sky Brightness. The central cross marks the location of the Antenna Site clear sky chart. Tiny crosses mark other charts. This map assumes an observer at sea level. A real observer should see a slightly darker sky.  As stated above, "Antennae Site" is classified as '2' on the Bortle scale. Limiting magnitude is 7.1 to 7.5.  Sky brightness is 21.99 to 21.89 mags per square arc second.

Attendance at the 2019 All-Arizona Star Party is contingent upon your agreement to the terms in the following public disclosure:

In consideration of my attendance at the 2019 All-Arizona Star Party to be held at a site known as "Hovatter Road Airstrip Site", located  south of I-10 and Hovatter Rd (Exit 53)  on October 25 through October 26, 2019, I agree to hold harmless the East Valley Astronomy Club (EVAC) and the Saguaro Astronomy Club (SAC), which are joint site permit holders and the US Bureau of Land Management as Land Owner,  and the United States Government in  general  from any claims, liabilities, losses, demands, causes of action, suits and expenses (including attorney fees), which may directly or indirectly be connected to the All-Arizona Star Party and/or my presence on the premises known as "Hovatter Road Airstrip Site" and  related areas.

For more information please contact:
EVAC Event Coordinator


Looking forward to seeing you there under clear skies!